Vaporizer for oil-burners



C. E. ECKERLE.

vAPomzsa For: olL sumas.

Arrucmon mrd www. 1920.

Immun-1y 12,1921.

INVENTOR C/{Hlusztfauu y BY ATTORNEY UNITED STATES hCHARLES EGKERLE, OFBIRMINGHAM, ALABAMA.

vAronIzEn ron orL-BunNERs.

Specification of LettersrPatent.

Patented July 12, 1921.

` Application inea July 17, 1920. serial No. 396,924. y

To all 107mm t may concern:

Be it known that I, CHARLES E. Eonmmn, la citizen of the United Statesof America, residing at Birmingham, in the county of Jefferson and Stateof Alabama, have in vented certain new and useful Improvements inVaporizers for Oil-Burners, of which the following is a specication.

My invention relates to a vaporizer for the heavier hydrocarbon oils andis especially designed to avoid the use of wicks or other agenciesliable tobecome carbonized, and to utilize a taper plug disposed withinthe highly heated vaporizing pipe or tube and fitted therein with soclose a clearance that the oil is forced past the plug in the shape ofan extremely thin annulus or sheet which travels along the highly heatedwall of the tube or pipe. rllhe advantages of this construction areobvious-in that the oil is re* duced to an extremely line annular jet orspray which is forced to make its exit ,from the oil reservoir along thehighly heated walls and thus becomes immediately and completelyvaporized.

A further important advantage is. that the flow of oil' beingA uniformand continuous over and about'the large end of the cone or taper plugkeeps the latter at all times moist and avoids the hot dry spots whichoccasion the deposit of carbon.

A further advantage is that such a plug can be very readily removed andcleaned if it should in any manner become fouled.

Another important feature of my invention is the designing of the plugso as to form a chamber of substantial capacity between its middleportion and the vaporizer tube wall, which chamber forms a reservoirthat issupplied with a conduit of greater cross sectional area than thearea of the clear4 ance between the cone and the tube. As a result thisreservoir, which is highly heated, is maintained full of oil and in thismanner I protect the cone from carboniaation.

The advantages and preferred construction of my invention will be betterunder stood by reference to the accompanying drawings and to thespecification and appended claims descriptive thereof.

According to the drawings Figure l illustratesv aA hydrocarbon oillburner in side elevation with its vaporizer tube and cone plug shown incross section.

Fig. 2 is an enlarged view of thecone plug in the tube.

Similar reference numerals refer to similar parts throughout'thedrawings.

I have illustrated my. invention in combination with a burner lwhich istypical of any hydrocarbon oil burner and which in its detail structureforms no part of Vthe subject matter of this application. This burnerhas mounted above it a vaporizing tube 2 exposed to the heat of theburner throughout the major vportion of its length and especiallyat itsends where the burner orifices 3 will highly heat the tube. The tube atits intake end is internally threaded to receive a plug which comprisesa threaded body l, a wrench grip on its outer end, and acone 6 yon itsinner end, the cone comprising a sharply tapering body portionterminating in a very slightly beveled baseV portion T which terminatesat the base of the cone. In axial oil duct 8 leads through the plug tothe point of junction between `the cone and the threaded end 4 of theplug and there it is intersected by a radial duct 9 at right angles tothe chiot 8, which duct 9 opens into the clearance or annular taperingreservoir l0 surrounding the cone and formed between the cone and thevaporizing tube 2. The walls ofthe vaporizing tube opposite thisreservoir are heated by the burner and the circular base of the cone isdisposed concentrically in the tube with its marginal edge` leaving anextremely line annular' clearance between it and the inner wall of thetube. In practice, what would be regarded as a snugfit inthe cone in thetube'willleave the desired clearance which should not exceedk in itsarea the area of the duct 9. In this way the escape of oil is less thanthe feed, the chamber l0 is kept full, and the annular oil spray or jetis of an extremely line thin nature so that practically every particleof oil is forced to pass over and travel along the highly heated wallsof the tube 2. No ad! justments of the cone are required, the oil flow,if desired, being controlled by a valve in the feed pipe (not shown),which couples to the threaded nipple ll on the outer end of the plug.

I prefer that the taperend of the plug be conical and this permitsscrewing the plug into the tube 2, but it is' only essential that thetaper end of the plug tit so closely in and conform to the internalcross section of the tube that an extremely line marginal clearance willbe left for the escape of the oi-l spray into the tube.

In operation, oil is admitted through the duct 8 of the plug and Howsradially outwardly through the lcon ducting Aduct Vand fills as itemerges from theV clearance, it is thoroughly vaporized and is .jettedinto the tube along its' -highly heated walls and isf thus volatilizedto the desired extent. As the burner tube becomes more and more highlyheated it vtends to expand away from the cone which is maintained at amuch lower temperature by the bath of oilv surrounding it and thug thevolumetric flow of oil is auv tomatically increased responsive to thein- 1 oil.

crease in temperature of the vaporizing tube and accordingly of itscapacity to vaporize ln this manner, notwith standing the variation vinthe area oft-he clearance be tween the cone and tube, the degree of vthevaporization remains substantially constant.

l do not limit myself to the peculiar design of the cone as the same maybe varied without departing from my invention, but l do consider'itessential that Vthe cone or its equivalent should be so designed andshaped as to causethe oil in its flowV past the cone to be eiectuallyvaporized byV the highly heated walls of the vaporizingtube.

e Having thus described my. invention, whatV l claim as new and tersPatent, is

l. A vaporizer for hydrocarbon eilsj'comprisiug a'vaperizing tube, aconical `plug therein providing atine marginal clearance between itsinner `end and Athe tube, and

desire to secure by Let i' means to feed the oilto be vaporized betweenthe plugV and inner wall of the tube, lsubstantially as described.

2. A vaporizer for hydrocarbon oils cornprising a vaporizing tube, a,conical plug therein providing a fine marginal clearance between itsinner end and the tube, said plug b'eingereduced to provide space for aYsubstantial Voil reservoir between it and the tube, and means to feedthe oil to be vapor- ;scribed.

3. The combination with a vaporizing tube, of a plug fitted therein andhaving a conical inner end which is adapted to leave -only a fineannular clearance between its inner end and the inner wall of the tube,and meansto feed the oil to bel vaporized into the clearance between thetapering walls of the cone and the inner wall of the vaporizing tube. YY

l. ln combination, a vaporizing tube and means to heat it, of a plugtherein having its .inner end liaredto it'in the tube leaving a veryfine clearance surrounding it, and a feed duct for vthe fuel oil greaterin cross sectional area than the area of the smallest clearance betweenthe yplug and tube in a transverse plane. Y n

5. The combination with a vaporiaing tube and means 'to heat it; of avplug havingv its outer end threaded'to screw into the tube, itsintermediate `portion circumferentially reduced and its inner endgradually flaring on a taperfto terminate in a snug lit which leavesy asubstantially Vuniform p and very smallclearance between its inner endand the inner wall ofV the, tube; andv a fuel oil feed. duet leadingthrough the threaded end of the'plug` and opening laterally through thereduced intermediate portion of the plug.

G. The vcombination with a yaporizing tube and means to heat it; of aplug having its outer end threaded to screw into the tube, its inner endreduced to form a symmetrically tapered body, the walls of which Hareoutwardly sharply until they approach the inner end of the plug andthen'flare at an extremely acute angle'to the inner wall of the tubetotheinnerfend of the plug'which is disposed concentrically in the tubeand spaced therefrom by an eXtremely fine annular'clearance; there beingan oil supply duct leading through the plug body and opening laterallythrough the Vtapered intermediate portion of the plug, the crosssectional of said duct being greater than the area of the line annularclearance between the inner end of the plug and the tube, substantiallyas described.

' In testimony whereof l atliX msignature.

CHARLES E. EC ERLrE.

Witnesses: Y

R. G. WESTBROQK;

J. N. MAnTrN.

